Hand concrete-mixer.



Eatentea July 14, 19m

LSA@

lll/l l l/ j HARRY 0. CLARKE, OF PASADENA, CALIFORNIA;

HAND ooNcRETE-MIXEE. p

inoaasa.

Specication of Letters Patent.

Patented July M5, 1914.

Aepncatioli mea september 17,1912. serialNo. 729,756. i f

To all whom it 'may concern.' i

Be it known that I, HARRY O. CLARKE, a citizen of the United States, residing at Pasadena, California, have invented and useful Hand Concrete-Mixer, of which the following is a specification.

My invention relates tol an implement for use in mixing concrete and other similar mixtures.

- The object of the device is to 'provide an implement .which maybe used for the purpose of stirring 'and mixing the material as a hoe or a rake is now ordinarily used, and whichwill at the -same time supply to the mixture the water necessary to render it of the desired consistency. My device has4 the maximum strength and durability. I vhave also provided a'simple means for cleaning the passagewaysinside the implementwhen the same become clogged in any manner.

The means lby which these "beneficial results are attained are fully described herein and are shown in the accompanying draw'- ings in which: 1'

Figure 1 is a side View of the complete device. Fig. 2 is a rear .viewof the implement with the handle and a portion of one tooth broken away to more fully illustrate the constructie-11. F ig. 3 is a transverse section taken on the line -a in Fig. 2, and Fig. 4 is a section taken on the line b-b in Fig. 2, looking in rthe direction indicated by the arrows. l

Throughout the several views like characters indicate like parts anil referring to the details of construction, A5 is a tubular handle to which is attached the rake. like .head of the implement composed of the two members 6 land 7 which when in use are firmly held together by means of the bolts 8. The adjacent sides of the-two'members 6 and 7 are. grooved in such manner that when the two0 members are boltedtogether continuous channels are formed leading from andv communicating with the channel inside al 116W.

to the mixturethetubular handle 5 and forming outlet in the end of each tooth. f

9 is a regulating valve .by .means of which the flow of water is regulated as it enters the tubular handle 5.

10 is an ordinary female member of a y hose connection permanently. attached to the regulating valve 9 and adapted to receive ythe male member of the hose connection on the ,hoseV 11. V

In use the implement 1s` handled asa rake would behandled, except that when the mixture" is properly dry mixed, water is added through the hollow teeth, the flow.y beingregulated by means of' the ;valve 9.

' In case rock,sand', gravel or any other material becomesl lodgedV in the teeth, thereby interfering with the flow of water, the members 6 and 7 may be separated by removing the bolts 8 and the, obstruction can be lreadily removed. This feature is of greatest importance. 'l AThisform of .construction also renders the devicel easy to construct by making it possible to cast the members, and they are preferably made of cast steel or other similar material.

Having thus described my device what I,

claim as new and desire to secure by Letters Patent is: y

In a-rale, the lcombination of a hollow handle; a head attached tol said hollow handle and composed of two separable inem-- bershaving teeth 4formed thereon and; havin'g grooves' in their adjacent sides which,v

when the members are-'fastened together,

form passageways from the end` of each tooth to and communicating with said hollowl handle; means for fasteningthe members of said head together; and means for regulating the supply of uid entering said handle.

HARRY Q. CLARKE.

Witnesses: y f

EMIL MENHOF, i ANDREW K.' MARTELL. 

